Thomas Jefferson, Henry Augustine Washington (1854). “The Writings of Thomas Jefferson: Being His Autobiography, Correspondence, Reports, Messages, Addresses, and Other Writings, Official and Private : Published by the Order of the Joint Committee of Congress on the Library, from the Original Manuscripts, Deposited in the Department of State”, p.176
"On Some Problems of Our Party's Juche Idea and the Government of the Republic's Internal and External Policies". Mainichi Shimbun, September 17, 1972.